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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pnp/support.c | |
download | lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/pnp/support.c')
-rw-r--r-- | drivers/pnp/support.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c new file mode 100644 index 000000000000..b952aec49189 --- /dev/null +++ b/drivers/pnp/support.c @@ -0,0 +1,40 @@ +/* + * support.c - provides standard pnp functions for the use of pnp protocol drivers, + * + * Copyright 2003 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/ctype.h> + +#ifdef CONFIG_PNP_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include <linux/pnp.h> +#include "base.h" + +/** + * pnp_is_active - Determines if a device is active based on its current resources + * @dev: pointer to the desired PnP device + * + */ + +int pnp_is_active(struct pnp_dev * dev) +{ + if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 && + !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 && + pnp_irq(dev, 0) == -1 && + pnp_dma(dev, 0) == -1) + return 0; + else + return 1; +} + + + +EXPORT_SYMBOL(pnp_is_active); |